There are many many online tutorials you can work through, and there are plenty of self help books on the subject. You shouldnt need to pay if you are just trying to learn the basics, for example; http://www.tizag.com/phpT/
Take a look at http://www.php.net/manual/en/ There are documentations and expert discussions with how-to tutorials on almost every php task.
Check out this site for an awsome PHP tutorial http://www.tuxradar.com/practicalphp It's basicly an online book, teaching you from basic stuff to pro stuff.